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nirvana33 [79]
3 years ago
6

Quantitative characters vary in a population along a continuum. How do such characters differ from the characters investigated b

y Mendel in his experiments on peas?
A. Environment and genes affect quantitative characters, whereas only genes determined the pea characters studied by Mendel.
B. The nature of inheritance of quantitative characters is poorly understood, and Mendel understood the nature of inheritance for the characters he studied in his peas.
C. Quantitative characters are due to polygenic inheritance, the additive effects of two or more genes on a single phenotypic character.
D. A single gene affected all but one of the pea characters studied by Mendel.
Biology
1 answer:
erik [133]3 years ago
8 0

Answer:

C. Quantitative characters are due to polygenic inheritance, the additive effects of two or more genes on a single phenotypic character.

Explanation:

Mendel studied the discrete traits that were present in observable contrasting phenotypes. Tall or dwarf stem, purple or white flowers, round or wrinkled pods are some of the examples of discrete traits. Each of these traits is mostly regulated by two alleles of a gene.

On the other hand, a polygenic trait is the one that is regulated by more than one gene. Quantitative traits are polygenic traits. The alleles of all the genes that regulate a quantitative trait have an additive effect on the phenotype. For example, human skin color is a quantitative trait and shows continuous variation. There is a range of human skin color regulated by the sum total of effects of all the alleles of the regulatory genes present in an individual.

An individual with "aabbcc" genotype would have very light skin color while an individual with "AABBCC" genotype would have a very dark skin color. The skin color of the intermediate genotype would be in between these two extreme phenotypes.

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Graph y = -2x +3 and its inverse.
Gnesinka [82]
The graph of y = -2x + 3 is a straight line

Its slope is - 2

Its y-intercept is + 3

To draw the line you can use these two points (0,3) and (3/2 , 0)

This line does ont pass through the third quadrant. It comes downward from the second quadrant, touches the y-axis at y =3, continues on the rirst quadrant, touches the x-axis at x = 3/2, and contiues into the fourth quadrant.


Graph of its inverse

Exchange y and x in the given function and solve for the new y

x = - 2y + 3 => y = - x/2 + 3/2

It is also a straight line;
Its slope is -1/2
Its y-intercept is 3/2

It is also in the second, first and fourth quadrant

Use these two points to draw the line (0,3/2) and (3,0).

You do not need to know to draw this, but the inverse of a function is its reflection through the line y =x.


  
6 0
3 years ago
Which statements describe planetesimals? Select three options. They are the origins of planets. They formed from gas and dust. T
Anika [276]

A solid minute object that is said to come together for the formation of the planet and are believed to produce cosmic dust are called planetesimal.

The options that best describes the planetesimals are:

  • Option A. They are the origins of planets.

  • Option B. They formed from gas and dust.

  • Option D. They are believed to have developed in debris disks.

The descriptions can be explained as:

  • It is believed that planets formation occurred through planetesimals. The formation happened from gas, dust particles and debris.

  • By the process of accretion, the discs coalesced and became bigger and solid over time. This bigger mass started attracting other matters towards each other because of gravitational force.

  • This pull resulted in either breaking or creation a bigger mass of pieces known as planetesimals. The collision continued to become bigger and solid planets we know today.

Therefore, options A, B and D are correct.

To learn more about planetesimals refer to the link:

brainly.com/question/10337322

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Answer:

A

Explanation:

If you have ever seen a punnett square, you should know already that usually, they have 4 (or more) little boxes with two of the same letter. (ex. EE, ee, or Ee in every box). This predicts what the genotype of the offspring would be, based on the parents' genotypes. Pedigree charts track inherited traits, whether that be a disease or health.

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Acrhimedles is you answer
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